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Role of pH and current density in electrodeposited soft
magnetic Co–Ni–Fe alloy thin films
K. SUNDARAM1, M. RAJA2, S. THANIKAIKARASAN3,
J.P. CHU4, T. MAHALINGAM1
1Department of Physics
Alagappa University
Karaikudi – 630 003
India
2Department of Physics
Kalasalingam University
Krishnankoil – 626 790
India
3Centre for Scientific and Applied Research
School of Basic Engineering and Science
PSN college of Engineering and Technology
Tirunelveli – 627 152
India
4Department of Polymer Engineering
National Taiwan University of Science and Technology
Taipei – 10907
Taiwan
FeS2 quantum dots sensitized nanostructured TiO2
solar cell: photoelectrochemical and photoinduced
absorption spectroscopy studies
I. BEDJA
CRC, Department of Optometry
College of Applied Medical Sciences
King Saud University
PO Box 10219 Riyadh
11433 Saudi Arabia
Abstract
Thin films of nanostructured TiO2 have been modified with FeS2 (pyrite) nano–particles by a low temperature chemical reaction of iron pentacarbonyl with sulfur in xylene. Quantum size effects are manifested by the observation of a blue shift in both absorption and photocurrent action spectra. PIA (Photoinduced absorption spectroscopy), where the excitation is provided by a square–wave modulated (on/off) monochromatic light emitting diode, is a multipurpose tool in the study of dye–sensitized solar cells. Here, PIA is used to study quantum–dot modified TiO2 nanostructured electrodes. The PIA spectra obtained give evidence for long–lived photoinduced charge separation: electrons are injected into the metal oxide and holes are left behind in the FeS2 quantum dot. Time–resolved PIA shows that recombination between electrons and holes occurs on a millisecond timescale. The Incident–Photon–to–Current Efficiency of about 23 % was obtained at 400 nm excitation. The performances of TiO2 electrodes modified with FeS2 are relatively low, which is explained by the presence of FeS2 phases other than the photoactive pyrite phase, as follows from the XRD spectrum.
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Influence of thermal treatment on the corrosion
resistance of electrolytic Zn–Ni coatings
K. WYKPIS, M. POPCZYK, J. NIEDBAŁA, A. BUDNIOK,
E. ŁĄGIEWKA, B. BIERSKA–PIECH
University of Silesia
Institute of Materials Science
Bankowa 12
40–007 Katowice
Poland
Novel microwave assisted synthesis of highly doped
phase pure Nd:YAG nanopowder
L. KIRANMALA, M. REKHA, M. NEELAM
Chemistry Division
Laser Science and Technology Centre
DRDO, Metcalfe House
Delhi–110054
India
TiO2 supported on SiO2 photocatalysts prepared using
ultrasonic–assisted sol–gel method
X.–L. YANG, C.–J. LIU, Y.–Q. LIU, X. LI, Y.–H. XU
Institute of Biomaterial
College of Science
South China Agricultural University
Guangzhou 510642
Guangdong
China
The influence of sublayer material on surface properties
of electrodeposited nickel with periodical structures
E. FATARAITĖ1, E. GRIŠKONIS1,2, A. GUOBIENĖ1, P. NARMONTAS1,
I. PROSYČEVAS1, S. TAMULEVIČIUS1
1Institute of Materials Science
of Kaunas University of Technology
Savanoriu 271
LT–50131 Kaunas
Lithuania
2Department of General Chemistry
Kaunas University of Technology
Radvilenu 19
LT–50254 Kaunas
Lithuania
Effect of heat-treatment on grain growth
of nanocrystalline tricalcium phosphate powder
synthesized via the precipitation method
I. MOBASHERPOUR1, E. SALAHI1, S.A. MANAFI2,
R. DARVISHI KAMACHALI1
1Ceramics Department
Materials and Energy Research Center
P.O. Box 31787–316
Tehran
Iran
2Ceramics Department
Shahrood branch
Islamic Azad University
Shahrood
Iran
AC susceptibility study of YBCO
N. GÜÇLÜ1, U. KÖLEMEN2
1Konya University
A.K. Education Faculty
Department of Physics
42090–Meram/Konya
Turkey
2Gaziosmanpaşa University
Faculty of Sciences and Art
Department of Physics
60240-Taşlçiftlik/Tokat
Turkey
Comparative cavitation erosion test on steels
produced by ESR and AOD refining
M. DOJČINOVIĆ
Faculty of Technology and Metallurgy
University of Belgrade
Karnegijeva 4
11000 Belgrade
Serbia
Determination of the electronic band structure
of the rutile polymorph of TiO2: a quantum
chemical approach
P. J. BARDZIŃSKI1,2
1Imperial College London
Thomas Young Centre
Computational Materials Science Group
South Kensington Campus
Exhibition Road
London SW7 2AZ
Great Britain
2Wroclaw University of Technology
Institute of Materials Science and Technical Mechanics
B1 building – room 110
Smoluchowskiego 25
50–370 Wrocław
Poland
Mechanisms of carriers transport
in Ni/n–SiC, Ti/n–SiC ohmic contacts
R. KISIEL1, M. GUZIEWICZ2, K. GOLASZEWSKA2,
M. SOCHACKI1, W. PASZKOWICZ3
1Warsaw University of Technology
Institute of Microelectronics and Optoelectronics
ul. Koszykowa 75
00–662 Warszawa
Poland
2Institute of Electron Technology
Al. Lotników 32/46
02–668 Warszawa
Poland
3Institute of Physics
Polish Academy of Science
Al. Lotników 32/46
02–668 Warszawa
Poland
